Footage has been released of cracks found inside a reactor at a nuclear plant in Scotland.

The unit at Hunterston B in North Ayrshire has not been operating after the cracks were found to be growing faster than expected.

In March last year a planned inspection of the graphite bricks that make up the core of reactor 3 uncovered new “keyway root cracks”. EDF Energy, which owns and operates the plant, said these have now grown to an average of 2mm wide.

The firm has released footage of the cracks, which was taken in 2017 and 2018.

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